<html>
  <head>
    <title>Prueba Post</title>
  </head>
  <body>
    <form method="post" action="/oper">
      Op <input type="text" name="op" /> <br />
      arg1 <input type="text" name="arg1" /> <br />
      arg2 <input type="text" name="arg2" /> <br />
      <input type="submit">
    </form>
  </body>
</html>
